"Cornell box" meaning in English

{
  "etymology_text": "Developed at Cornell University.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Cornell box",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computer graphics",
          "orig": "en:Computer graphics",
          "parents": [
            "Computing",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A physical box with variously coloured walls and an inner light source, photographed and used to gauge the accuracy of a computer rendering of the same scene."
      ],
      "id": "en-Cornell_box-en-noun-PNA6ycyP",
      "links": [
        [
          "computer graphics",
          "computer graphics"
        ]
      ],
      "raw_glosses": [
        "(computer graphics) A physical box with variously coloured walls and an inner light source, photographed and used to gauge the accuracy of a computer rendering of the same scene."
      ],
      "related": [
        {
          "word": "Utah teapot"
        }
      ],
      "topics": [
        "computer-graphics",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "Cornell University",
        "Cornell box"
      ]
    }
  ],
  "word": "Cornell box"
}

{
  "etymology_text": "Developed at Cornell University.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Cornell box",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Utah teapot"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "en:Computer graphics"
      ],
      "glosses": [
        "A physical box with variously coloured walls and an inner light source, photographed and used to gauge the accuracy of a computer rendering of the same scene."
      ],
      "links": [
        [
          "computer graphics",
          "computer graphics"
        ]
      ],
      "raw_glosses": [
        "(computer graphics) A physical box with variously coloured walls and an inner light source, photographed and used to gauge the accuracy of a computer rendering of the same scene."
      ],
      "topics": [
        "computer-graphics",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "Cornell University",
        "Cornell box"
      ]
    }
  ],
  "word": "Cornell box"
}